If that really is where is came from, it would have had to be a pretty powerful astronomical event - or an advanced alien civilisation using an astonishingly large and powerful transmitter.

如果他真的是来自那里，它必将是一个非常强有力的天文事件——或者说，一个先进的外星文明正在使用一台大得令人吃惊的强力发射机。

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Reversing the technology to use the lens as a transmitter instead of a receiver would enable aliens to beam massively powerful signals across the galaxy, said Dr Drake.

德雷克博士说，把这项技术反过来，利用透镜作发射器而不是接收器，能使外星人发送大量强劲信号传遍银河系。

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Coming from 220 million light years away, it is possible it was a powerful alien transmitter.

来源于2.2亿光年之外，它可能是外星生物的一个强力发报机。

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An EMP wave a million times stronger than the most powerful radio transmitter would damage or destroy the electrical grid and unshielded electronic devices upon which our society utterly depends.

CENTERFORSECURITYPOLICY: Mortal threat